Iphone 5s getting very hot
I have a 5s, it's a little more than a year old. I usually go to sleep with my phone plugged in charging and occasionally with FaceTime Audio running. Usually I wake up and it's a normal temperature, but this morning it was so hot I jumped back after touching it. The battery has been draining much faster than normal today also, it drained 5% in four minutes of use. Every time I use it today it gets unnaturally hot. What could be wrong?
iPhone 5s, iOS 8.3